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Published In: Plants of the Coast of Coromandel , t. 234. 1815. (Pl. Coromandel) Name publication detailView in BotanicusView in Biodiversity Heritage Library
 

Project Name Data (Last Modified On 6/2/2011)
Acceptance : Accepted
Project Data     (Last Modified On 6/3/2011)
Flower/Fruit: Fl.Per.: July-September. Fr. September-November.
Type: Lectotype: India, Roxburgh (BM).
Distribution: Distribution: Asia and tropical Africa.
Comment/Acknowledgements: Grows in lakes and ponds and is often cultivated for its edible fruit. The peeled nut is eaten raw or cooked.
Illustration: Trapa bispinosa Roxb. (Illustration)
Map Location: C-6 Peshawar Dist.: Nowshera-Charsada rd., Kheshgi Lake, M.A. Qureshi 7601 (RAW); id., S.A. Khan 7585 (RAW, PPFI-B); C-7 Jhelum Dist.: Sohawa, 9.6.1944, Mohinder Nath s.n. (RAW); Rawalpindi Dist.: Topi Park, March 1939, Madanjit Singh s.n. (RAW).

 

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Floating leaves 3-5 x 3.5-7 cm, entire at the basal end, dentate to crenate at the apical end, glabrous above, densely pubescent-villous below; stipules c. 3 mm, linear; petiole 3-12 cm long, woolly, with a fusiform swelling at the upper end. Submerged leaves c. 5 cm, pinnatisect, segments fillform. Flower tubular, white. Pedicel 2.5-3.5 cm long, villous. Sepals 7 mm long, ovate, 2 out of 4 persistent, villous. Petals oblong with an elongated narrow base, c. 2 times the length of the sepals. Disc c. 3 mm wide, edges dissected. Style c. 4 mm long, single, tapering; stigma rounded. Nut 2-3.8 cm long and broad, quadrangular, top-shaped, beak surrounded by long stiff hairs. Fruit bihorned; horns c. 2 cm long, pointing upwards, reflexedly barbed below the tip.
 
 
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